As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS-2 HRS INTO FLT AT FL40, 0 RT PACK OFF AND RT PACK TEMP EICAS DISPLAYED INOPERATIVE AND PACK OFF LIGHTS DISPLAYED ON PACK SWITCH QRH PERFORMED. RIGHT PACK OFF & RT PACK TEMP RESET PACK AFTER 5 MIN RT PACK REMAINS IN STBY AT RT PACK TEMP EICAS. PERFORMED QRH. PACK SWITCH REMAINS IN STBY-N WITH NO FURTHER ACTION. PERFORMED BITE TEST RT PACK TEMP CONTROLLER, NO FAULT FOUND. RESET RT PACK SYS AND OPS CHECK OF RT PACK SYSTEM IAW AMM21-51-00, NORMAL.